Steam-valve



(No Model.)

B. F. BINNIX.

. STEAM VALVE.

No. 456,395. Patented July 21, 1891.

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UNITED STATES PATENT O FICE BENJAMIN F. BINNIX, OF SEABROOK, MARYLAND.

STEAM-VALVE.

SPECIFICATION forming part of Letters Patent No. 456,395, dated July 21,1891.

Application filed January 23, 1891. Serial No. 378,839. (No modeli) Toall whom it may concern:

Be it known that I, BENJAMIN F. BINNIX, a citizen of the United States,and a resident of Seabrook, in the county of Prince Georges and State ofMaryland, have invented new and useful Improvements in Steam-Valves; andI do hereby declare the following to be a full, clear, and exactdescription of said invention, reference being had to the accompan yin gdrawings, and to the letters of reference marked thereon, which form apart of. this specification.

This invention relates to new and useful improvements in steam-valves,the object of the invention being to facilitate the application of apacking ring or disk to the valvedisk, and to so apply the same as toentirely remove the possibility of it being blown out or in any wayimpaired. The packing, in contemplation of the use of which thisinvention is made, is that known as the Jenkins disk;

but the invention equally applies to other descriptions of packing,which when subjected to the action of steam is liable to injury. Toinstance the nature of this injury, it will be said that in the case ofthe Jenkins packingdisk and others the packing, whileof a firmcharacter, softens somewhat under contact with steam, so as to render itnecessary to be so embedded in the valve-disk as to transfer thestrainnof the steam-pressure to a surrounding rim and not on thepacking, which by its very nature is rendered unsuitable for suchpurpose, and when not properly secured to the valve-disk is liable to bedisplaced or even blown out. v

For the purpose of etfectin g the above-mentioned objects, I constructthe valve-disk with an overhanging flange or annular rim either flushwith the surface of the packing-disk or within the disk, the said flangeforming a shoulder against which it will be resisted if acted upon byforce, which tends to force it outward.

' Myinvention alsoapplies to a construction of valve in which thevalve-stem is provided with a double-valve disk or a head having avalvedisk on each end,in which case the respective disks alternatelyseat themselves in the operation of opening and closing the valve, theouter valve-disk being pressed to its seat in the stem-casing when thepreliminary valve is opened, for the purpose of cutting oif the steamfrom the packing in the casing around thestem, which otherwise would beburned out. As regards this construction of valve, the inventionconsists in forming the outer disk or head in two parts, with theoverhanging ring for engaging the packing-ring, and the two sectionsadapted to be placed together after the packing-ring is applied andattached to the primary valve-disk by means of screwihreads formed onthe said sections and the sections being securely bound together bybeing thus secured.

In the accompanying drawings, Figure 1 is a longitudinal sectional viewof a globe-valve with myinvention applied thereto. Fig. 2 is a view inperspective of the divided head or disk detached. Figs. 3 and 4 arerespectively top and bottom views of the same.

Referring to the illustrations by letter, A indicates an ordinaryglobe-valve having the valve-stem B operating within the casing'C. Theopening through the globe portion is closed by the valve-disk D beingforced to its seat E, surrounding the said opening, and which is formedin the dividing partition of the valve. A seat F is provided in thevalvestem casing, against which the auxiliary valvedisk G bears whenthe'primaryvalve is opened,

and in consequence cuts off the steam from the upper portion of thecasing B and prevents it from burning the packing, which may bereplenished by virtue of its auxiliary valve or cut-off when the primaryvalve is open and in operation. v

The valve-disks D and G are provided with the overhanging rims Hand I,respectively, which form an annular groove Within the disks, in whichthe packing-ring may be secured.

In order to apply the packing-ring to a disk having an annular groove,it is necessary to have the portion G made in two sections, which whenbrought together form the complete disk or head. The interior of thedisk D, which also may have the overhanging rim, is screw-threaded andadapted to receive the screw-threaded end of the two sections of thedisk or head G and bind the'same together. By this means both the disksmay be provided with a packing-ring secured Within the same and adaptedto be screwed onto the primary in such a manner as to effectuallyprotect it valve-disk, substantially as described, and for and increaseits durability to a great extent. the purpose specified.

Having thus described my invention, what In testimony whereof I afiix mysignature in I claim, and desire to secure by Letters Patpresence of twosubscribing witnesses.

ent, is

In a steam-valve, the combination, with the ,BENJ. F. BINNIX. [L.valve-disk, of a supplemental valve or cut-off W1tnesses; disk havinganoverhangingriin,the said sup- PARKER H. SWEET, J12,

1o plemcntal valve-disk being formed in sections HARRY Y. DAVIS.

